[PATCH] D125165: [Clang] Introduce clang-offload-binary tool to bundle device files

[Joseph Huber via Phabricator via cfe-commits]

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In order to do offloading compilation we need to embed files into the
host and create fatbainaries. Clang uses a special binary format to
bundle several files along with their metadata into a single binary
image. This is currently performed using the `-fembed-offload-binary`
option. However this is not very extensibile since it requires changing
the command flag every time we want to add something and makes optional
arguments difficult. This patch introduces a new tool called
`clang-offload-binary` that behaves similarly to CUDA's `fatbinary`.
This tool takes several input files with metadata and embeds it into a
single image that can then be embedded in the host.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D125165

Files:
  clang/docs/ClangOffloadBinary.rst
  clang/include/clang/Basic/CodeGenOptions.h
  clang/include/clang/Driver/Action.h
  clang/include/clang/Driver/ToolChain.h
  clang/lib/CodeGen/BackendUtil.cpp
  clang/lib/Driver/Action.cpp
  clang/lib/Driver/Driver.cpp
  clang/lib/Driver/ToolChain.cpp
  clang/lib/Driver/ToolChains/Clang.cpp
  clang/lib/Driver/ToolChains/Clang.h
  clang/test/Driver/amdgpu-openmp-toolchain-new.c
  clang/test/Driver/cuda-openmp-driver.cu
  clang/test/Driver/cuda-phases.cu
  clang/test/Driver/linker-wrapper-image.c
  clang/test/Driver/linker-wrapper.c
  clang/test/Driver/openmp-offload-gpu-new.c
  clang/test/Driver/openmp-offload-infer.c
  clang/test/Frontend/embed-object.c
  clang/test/Frontend/embed-object.ll
  clang/test/lit.cfg.py
  clang/tools/CMakeLists.txt
  clang/tools/clang-offload-binary/CMakeLists.txt
  clang/tools/clang-offload-binary/ClangOffloadBinary.cpp

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